EP 3884673 B1 20221228 - VIDEO ENCODER AND ENCODING METHOD
Title (en)
VIDEO ENCODER AND ENCODING METHOD
Title (de)
VIDEOCODIERER UND CODIERUNGSVERFAHREN
Title (fr)
CODEUR VIDÉO ET PROCÉDÉ DE CODAGE
Publication
Application
Priority
- EP 18207029 A 20181119
- US 201862769223 P 20181119
- US 2019061627 W 20191115
Abstract (en)
[origin: WO2020106559A1] An image sensor includes a plurality of pixels, each pixel belonging to one of N subframes each characterized by (a) a same exposure-time sequence that includes a short exposure-time alternating with a long exposure-time, and (b) a respective temporal offset equal to a multiple of the short exposure-time. A method for encoding a video stream captured by the image sensor includes (i) for each subframe, linearly combining a long-exposure image, captured at the long exposure-time, and a short-exposure image, captured at the short exposure-time, to yield a residual image, (ii) combining at least some of the long-exposure images from the N subframes to yield a full-frame image having a higher resolution than any long-exposure image, (iii) encoding the full-frame image into a base layer of the video stream, and (iv) encoding at least some of the residual images from the N subframes into an enhancement layer of the video stream.
IPC 8 full level
H04N 19/31 (2014.01); H04N 5/345 (2011.01); H04N 5/355 (2011.01); H04N 19/182 (2014.01); H04N 19/186 (2014.01); H04N 19/33 (2014.01); H04N 5/235 (2006.01)
CPC (source: EP US)
H04N 5/265 (2013.01 - US); H04N 19/176 (2014.11 - US); H04N 19/182 (2014.11 - EP US); H04N 19/186 (2014.11 - EP); H04N 19/30 (2014.11 - EP); H04N 19/31 (2014.11 - EP US); H04N 19/33 (2014.11 - EP); H04N 19/46 (2014.11 - US); H04N 19/85 (2014.11 - EP US); H04N 23/73 (2023.01 - US); H04N 23/741 (2023.01 - EP); H04N 25/44 (2023.01 - EP); H04N 25/531 (2023.01 - EP); H04N 25/583 (2023.01 - EP); H04N 25/67 (2023.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2020106559 A1 20200528; CN 113170158 A 20210723; CN 113170158 B 20230711; EP 3884673 A1 20210929; EP 3884673 B1 20221228; JP 2022508057 A 20220119; JP 7143012 B2 20220928; US 11876987 B2 20240116; US 2022007040 A1 20220106
DOCDB simple family (application)
US 2019061627 W 20191115; CN 201980076231 A 20191115; EP 19818370 A 20191115; JP 2021523940 A 20191115; US 201917295404 A 20191115